This is Alley House 2, a modular prefab home aiming for LEED Platinum certification, located in the Madison Valley neighborhood of Seattle, Washington. We looked at the home during site assembly and note that it’s complete and listed for sale at the offering of $599,000. The home has three bedrooms, two bathrooms, a one-car garage (that could be used as a workshop or converted to an ADU), and 1,687 square feet.